Periodic Table & Periodic Trends Unit Review

Front

Who arranged the periodic table and predicted the existence of undiscovered elements?

Back

Dmitri Mendeleev.

Front

What happens to the reactivity of alkali metals as you move down the group?

Back

Reactivity increases.

Front

How many valence electrons do group 17 elements have?

Back

7 valence electrons.

Front

What does each period in the periodic table correspond to?

Back

Energy levels.

Front

What are isotopes?

Back

Isotopes are atoms of the same element that have different numbers of neutrons.

Front

What is the periodic law?

Back

The periodic law states that the properties of elements are a periodic function of their atomic numbers.

Front

What is the significance of the periodic table?

Back

The periodic table organizes elements based on their properties and helps predict their behavior.

Front

What are the main groups of the periodic table?

Back

Alkali metals, alkaline earth metals, transition metals, halogens, and noble gases.

Front

What is the trend in atomic radius across a period?

Back

Atomic radius decreases from left to right across a period.

Front

What is electronegativity?

Back

Electronegativity is the ability of an atom to attract electrons in a chemical bond.